Related Clues:

• Army group
• Part of BTU
• College credit
• Entity
• The "U" of BTU
• Apartment, to an apartment manager
• Like 'first'
• One Adam Twelve, e.g.
• Monad
• Peck, e.g.
• Foot or fathom
• Military detachment
• Work crew
• Condo, for instance
• Single undivided entity